xref: /inferno-os/utils/acid/port (revision 74a4d8c26dd3c1e9febcb717cfd6cb6512991a7a)

// portable acid for all architectures

defn pfl(addr)
{
	print(pcfile(addr), ":", pcline(addr), "\n");
}

defn
notestk(addr)
{
	local pc, sp;
	complex Ureg addr;

	pc = addr.pc\X;
	sp = addr.sp\X;

	print("Note pc:", pc, " sp:", sp, " ", fmt(pc, 'a'), " ");
	pfl(pc);
	_stk(pc, sp, linkreg(addr), 1);
}

defn labstk(l)				// trace from a label
{
	_stk(*(l+4)+Labpcoff, *l+Labspoff, linkreg(0), 0);
}

defn params(param)
{
	while param do {
		sym = head param;
		print(sym[0], "=", sym[1]);
		param = tail param;
		if param then
			print (",");
	}
}

defn locals(l)
{
	local sym;

	while l do {
		sym = head l;
		print("\t", sym[0], "=", sym[1], "\n");
		l = tail l;
	}
}

defn _stk(pc, sp, link, dolocals)
{
	local stk;

	print("At pc:", pc, ":", fmt(pc, 'a'), " ");
	pfl(pc);

	stk = strace(pc, sp, link);

	while stk do {
		frame = head stk;
		print(fmt(frame[0], 'a'), "(");
		params(frame[2]);
		print(") ", pcfile(frame[0]), ":", pcline(frame[0]));
		print("\n\tcalled from ", fmt(frame[1], 'a'), " ");
		pfl(frame[1]);
		stk = tail stk;
		if dolocals then
			locals(frame[3]);
	}
}

defn findsrc(file)
{
	local lst, src;

	if file[0] == '/' then {
		src = file(file);
		if src != {} then {
			srcfiles = append srcfiles, file;
			srctext = append srctext, src;
			return src;
		}
		return {};
	}

	lst = srcpath;
	while head lst do {
		src = file(head lst+file);
		if src != {} then {
			srcfiles = append srcfiles, file;
			srctext = append srctext, src;
			return src;
		}
		lst = tail lst;
	}
}

defn line(addr)
{
	local src, file;

	file = pcfile(addr);
	src = match(file, srcfiles);

	if src >= 0 then
		src = srctext[src];
	else
		src = findsrc(file);

	if src == {} then {
		print("no source for ", file, "\n");
		return {};
	}
	line = pcline(addr)-1;
	print(file, ":", src[line], "\n");
}

defn addsrcdir(dir)
{
	dir = dir+"/";

	if match(dir, srcpath) >= 0 then {
		print("already in srcpath\n");
		return {};
	}

	srcpath = {dir}+srcpath;
}

defn source()
{
	local l;

	l = srcpath;
	while l do {
		print(head l, "\n");
		l = tail l;
	}
	l = srcfiles;

	while l do {
		print("\t", head l, "\n");
		l = tail l;
	}
}

defn Bsrc(addr)
{
	local lst;

	lst = srcpath;
	file = pcfile(addr);
	if file[0] == '/' && access(file) then {
		rc("B "+itoa(-pcline(addr))+" "+file);
		return {};
	}
	while head lst do {
		name = head lst+file;
		if access(name) then {
			rc("B "+itoa(-pcline(addr))+" "+name);
			return {};
		}
		lst = tail lst;
	}
	print("no source for ", file, "\n");
}

defn src(addr)
{
	local src, file, line, cline, text;

	file = pcfile(addr);
	src = match(file, srcfiles);

	if src >= 0 then
		src = srctext[src];
	else
		src = findsrc(file);

	if src == {} then {
		print("no source for ", file, "\n");
		return {};
	}

	cline = pcline(addr)-1;
	print(file, ":", cline, "\n");
	line = cline-5;
	loop 0,10 do {
		if line >= 0 then {
			if line == cline then
				print(">");
			else
				print(" ");
			text = src[line];
			if text == {} then
				return {};
			print(line, "\t", text, "\n");
		}
		line = line+1;
	}
}

defn stopped(pid)		// called from acid when a process changes state
{
	pstop(pid);		// stub so this is easy to replace
}

defn procs()			// print status of processes
{
	local c, lst, cpid;

	cpid = pid;
	lst = proclist;
	while lst do {
		np = head lst;
		setproc(np);
		if np == cpid then
			c = '>';
		else
			c = ' ';
		print(fmt(c, 'c'), np, ": ", status(np), " at ", fmt(*PC, 'a'), " setproc(", np, ")\n");
		lst = tail lst;
	}
	pid = cpid;
	if pid != 0 then
		setproc(pid);
}

defn asm(addr)
{
	local bound;

	bound = fnbound(addr);

	addr = fmt(addr, 'i');
	loop 1,30 do {
		print(fmt(addr, 'a'), " ", fmt(addr, 'X'));
		print("\t", @addr++, "\n");
		if bound != {} && addr > bound[1] then {
			lasmaddr = addr;
			return {};
		}
	}
	lasmaddr = addr;
}

defn casm()
{
	asm(lasmaddr);
}

defn new()
{
	bplist = {};
	newproc(progargs);
	// Dont miss the delay slot calls
	bpset(follow(main)[0]);
	cont();
	bpdel(*PC);
}

defn stmnt()			// step one statement
{
	local line;

	line = pcline(*PC);
	while 1 do {
		step();
		if line != pcline(*PC) then {
			src(*PC);
			return {};
		}
	}
}

defn func()			// step until we leave the current function
{
	local bound, end, start, pc;

	bound = fnbound(*PC);
	if bound == {} then {
		print("cannot locate text symbol\n");
		return {};
	}

	pc = *PC;
	start = bound[0];
	end = bound[1];
	while pc >= start && pc < end do {
		step();
		pc = *PC;
	}
}

defn next()
{
	local sp, bound;

	sp = *SP;
	bound = fnbound(*PC);
	stmnt();
	pc = *PC;
	if pc >= bound[0] && pc < bound[1] then
		return {};

	while (pc < bound[0] || pc > bound[1]) && sp >= *SP do {
		step();
		pc = *PC;
	}
	src(*PC);
}

defn dump(addr, n, fmt)
{
	loop 0, n do {
		print(fmt(addr, 'X'), ": ");
		addr = mem(addr, fmt);
	}
}

defn mem(addr, fmt)
{

	local i, c, n;

	i = 0;
	while fmt[i] != 0 do {
		c = fmt[i];
		n = 0;
		while '0' <= fmt[i] && fmt[i] <= '9' do {
			n = 10*n + fmt[i]-'0';
			i = i+1;
		}
		if n <= 0 then n = 1;
		addr = fmt(addr, fmt[i]);
		while n > 0 do {
			print(*addr++, " ");
			n = n-1;
		}
		i = i+1;
	}
	print("\n");
	return addr;
}

defn symbols(pattern)
{
	local l, s;

	l = symbols;
	while l do {
		s = head l;
		if regexp(pattern, s[0]) then
			print(s[0], "\t", s[1], "\t", s[2], "\n");
		l = tail l;
	}
}

defn spsrch(len)
{
	local addr, a, s, e;

	addr = *SP;
	s = origin & 0x7fffffff;
	e = etext & 0x7fffffff;
	loop 1, len do {
		a = *addr++;
		c = a & 0x7fffffff;
		if c > s && c < e then {
			print("src(", a, ")\n");
			pfl(a);
		}
	}
}

defn bppush(val)
{
	return {"p", val};
}

defn bpderef()
{
	return {"*", 0};
}

defn bpmask()
{
	return {"&", 0};
}

defn bpeq()
{
	return {"=", 0};
}

defn bpneq()
{
	return {"!", 0};
}

defn bpand()
{
	return {"a", 0};
}

defn bpor()
{
	return {"o", 0};
}

defn bpcondset(pid, addr, conds)
{
	local l;
	local id;
	local found;

 	if status(pid) != "Stopped" then {
 		print("Waiting...\n");
 		stop(pid);
 	}

	id = 0;
	found = 0;

	while !found && id <= 255 do {
		l = bpl;
		while l && head head l != id do {
			l = tail l;
		}

		if !l then
			found = 1;
		else
			id = id + 1;
	}

	if !found then {
		print("error: no breakpoints available\n");
		return -1;
	}

	bpl = append bpl, {id\d, pid\d, addr\X, conds};

	_bpcondset(id, pid, addr, conds);

	return id;
}

defn bpconddel(id)
{
	local i;
	local l;

	l = bpl;
	i = 0;
	while l do {
		if id == head head l then {
			bpl = delete bpl, i;
			_bpconddel(id);
			if id == bpid then
				bpid = -1;
			return {};
		}
		i = i + 1;
		l = tail l;
	}
	print("no breakpoint with id ", id\d, ".\n");
}

defn bpprint(b)
{
	local l;

	print(b[0], "\t", b[1], "\t", fmt(b[2], 'a'), " ", b[2]);
	print("\t{");
	l = b[3];
	while l do {
		print("\n\t\t\t\t\t", head l);
		l = tail l;
	}
	print(" }\n");
}

defn bptab()
{
	local l;

	l = bpl;
	print("ID	PID	ADDR			CONDITIONS\n");
	while l do {
		bpprint(head l);
		l = tail l;
	}
}

defn cont()
{
	local b, c, l, found;

	l = bpl;
	found = 0;
	c = curpc();
	while !found && l do {
		b = head l;
		if b[2] == c then {
			nopstop = 1;
			step();
			nopstop = 0;
			found = 1;
		} else {
			l = tail l;
		}
	}

	return startstop(pid);
}

defn bpset(addr)				// set a breakpoint
{
	return bpcondset(pid, addr, {});
}

defn bpdel(id)
{
	bpconddel(id);
}

defn bpaddr(id)
{
	local i;
	local l;
	local b;

	l = bpl;
	i = 0;
	while l do {
		b = head l;
		if id == b[0] then
			return b[2];
		i = i + 1;
		l = tail l;
	}
	print("bpaddr(", id\d, "): no match\n");
	return {};
}

progargs="";
print("/sys/lib/acid/port");